Kinematics of high proper motion stars determined from high resolution spectra in ground-based ultraviolet

Details Kinematics of high proper motion stars determined from high resolution spectra in ground-based ultraviolet Kinematics of high proper motion stars determined from high resolution spectra in ground-based ultraviolet

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010astbu..65...18k&link_type=abstract

Astrophysical Bulletin, Volume 65, Issue 1, pp.18-25

Astronomy and Astrophysics

Astrophysics

2

Scientific paper

Radial velocities for 15 stars with high proper motions were measured as a result of spectral observations, conducted with the NES echelle spectrograph of the 6-m BTA telescope in the wavelength range of 3550-5100 Å with a spectral resolution of R=60000. The standard deviation of the measured velocity does not exceed σ ≤ 0.9 km/s for the stars with metallicity [Fe/H]≳ -1, and σ ≤ 1.1 km/s for [Fe/H]≲ -1. The heliocentric velocities measured with high accuracy in combination with trigonometrical parallaxes and proper motions from the HIPPARCOS catalog allowed us to determine the distances and parameters of the galactic orbits of the stars under study. In general they are located within 100 pc; the binarity of several program stars is confirmed.

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